freedreno/layout: Don't align explicit layouts to page size

This could cause importing buffers, in particular multiplanar YUV, since
when the offset of the plane is added, the aligned size could be beyond
the end of the buffer.

Fixes: 27b0f64b3e ("freedreno/a6xx: Use handle for explicit layout")
Signed-off-by: Rob Clark <rob.clark@oss.qualcomm.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/36656>

src/freedreno/ci/freedreno-a618-fails.txt

@@ -226,17 +226,6 @@ spec@arb_base_instance@arb_base_instance-drawarrays,Fail
 spec@ext_base_instance@arb_base_instance-baseinstance-doesnt-affect-gl-instance-id_gles3,Fail
 spec@ext_base_instance@arb_base_instance-drawarrays_gles3,Fail
 
-# Bad assumptions in piglit about layout of multiplanar formats,
-# it should use separate buffers per plane:
-spec@ext_image_dma_buf_import@ext_image_dma_buf_import-export,Fail
-spec@ext_image_dma_buf_import@ext_image_dma_buf_import-sample_nv12,Fail
-spec@ext_image_dma_buf_import@ext_image_dma_buf_import-sample_nv21,Fail
-spec@ext_image_dma_buf_import@ext_image_dma_buf_import-sample_p010,Fail
-spec@ext_image_dma_buf_import@ext_image_dma_buf_import-sample_p012,Fail
-spec@ext_image_dma_buf_import@ext_image_dma_buf_import-sample_p016,Fail
-spec@ext_image_dma_buf_import@ext_image_dma_buf_import-sample_yuv420,Fail
-spec@ext_image_dma_buf_import@ext_image_dma_buf_import-sample_yvu420,Fail
-
 # glcts update
 dEQP-GLES2.functional.texture.mipmap.cube.projected.nearest_linear,Fail
 KHR-GL46.texture_view.view_classes,Fail

src/freedreno/fdl/fd6_layout.c

@@ -317,7 +317,7 @@ fdl6_layout_image(struct fdl_layout *layout, const struct fd_dev_info *info,
       }
    }
 
-   if (layout->layer_first) {
+   if (layout->layer_first && !explicit_layout) {
       layout->layer_size = align64(layout->size, 4096);
       layout->size = layout->layer_size * params->array_size;
    }